1. Bueckner HF (1958) The propagation of cracks and the energy of elastic deformation. Trans Am Soc Mech Eng 80:1225–1230
2. Bueckner HF (1970) A novel principle for the computations of stress intensity factors. Zeitschrift fur Angewandte Mathematic und Mechanik 50:529–546
3. Hartranft RJ, Sih GC (1973) Alternating method applied to edge and surface crack problems. In: Sih GC (ed) Mechanic of fracture, vol I, Methods of analysis and solutions of crack problems. Noordhoff International Publishing, The Netherlands, pp. 179–238
4. Bueckner HF (1971) Weight functionsWeight functions for the notched bar. Zeitschrift fur Angewandte Mathematic und Mechanik 51:97–109
5. Irwin GR (1957) Analysis of stresses and strains near the end of a crack traversing a plate. J Appl Mech Trans ASME 24:361–364